Which law states that the period of a planet's orbit around the Sun increases exponentially with the radius of its orbit?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. Kepler's third law.
The law that states a planet’s orbital period increases with the radius of its orbit is Kepler’s Third Law. It explains that the square of a planet’s orbital period is proportional to the cube of its average distance from the Sun.
The others options:
Hubble’s Law relates to galaxies moving away with velocity proportional to distance. Drake Law estimates extraterrestrial civilizations. Copernicus’ Law of Motion proposed heliocentrism but not orbital periods.
Thus, Kepler’s Third Law is correct.